CN103899297B - A kind of improve CO_2 stimulation success rate test pump efficiency method - Google Patents
A kind of improve CO_2 stimulation success rate test pump efficiency method Download PDFInfo
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- CN103899297B CN103899297B CN201410000357.XA CN201410000357A CN103899297B CN 103899297 B CN103899297 B CN 103899297B CN 201410000357 A CN201410000357 A CN 201410000357A CN 103899297 B CN103899297 B CN 103899297B
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Abstract
The present invention relates to and a kind of test pump efficiency method in order to what improve CO_2 stimulation success rate, the method comprises the following steps: (1), after anti-bar card liquid application work terminates, and injects from oil sets annular space and tests pump efficiency fluid 3m3～5m3, run through oil pumper 8h, when weak yellow liquid occurs in sample tap, repeatedly sample at oil well sampling mouth, utilize microwater device to chemically examine anti-freeze content therein, when its content reaches 20%, now oil pumper is stopped to bottom dead centre, close Paraffin Removal gate and build the pressure；(2), the time of building the pressure be 10 minutes, it is medium for suppressing 3-5MPa when pressure, and below 3MPa is for poor, and more than 5MPa is as well.This method utilizes a kind of economically viable fluid, this fluid have nontoxic, do not injure the characteristics such as stratum, density is little, low temperature resistant, immediately draw the pump efficiency of CO_2 stimulation well finally by the method built the pressure, increase oil measure to instruct lower step could carry out CO_2 stimulation.
Description
Technical field:
The present invention relates to oil extraction in oil field technical field, what particularly belong to raising CO_2 stimulation success rate tests pump efficiency method.
Background technology:
CO_2 stimulation is that after a certain amount of carbon dioxide is injected stratum by the oil jacket annular space of oil well, through stewing well after a while, carbon dioxide is fully diffused in oil reservoir, makes viscosity of crude reduction, volumetric expansion etc., makes crude oil be prone to extraction.But process of the test there is also this phenomenon at the scene, if service shaft pump efficiency is low, after CO_2 stimulation measure, oil increasing effect is difficult to evaluate, so for the success rate improving CO_2 stimulation measure, needing before CO_2 stimulation, selected a kind of economically viable method differentiates the pump efficiency of well of handling up, the precondition carrying out CO_2 stimulation to determine this well whether to possess.
Summary of the invention:
In order to solve the technical problem existed in background technology, the present invention provide a kind of improve CO_2 stimulation success rate test pump efficiency method, this method utilizes a kind of economically viable fluid, this fluid have nontoxic, do not injure the characteristics such as stratum, density is little, low temperature resistant, then by this fluid injection wells cylinder a certain amount of, immediately draw the pump efficiency of CO_2 stimulation well finally by the method built the pressure, increase oil measure to instruct lower step could carry out CO_2 stimulation.
The technical solution adopted in the present invention: a kind of pump efficiency method of testing improving CO_2 stimulation success rate comprises the following steps:
(1), after anti-bar card liquid application work terminates, inject from oil sets annular space and test pump efficiency fluid 3m3～5m3Run through oil pumper 8h, when there is weak yellow liquid in sample tap, repeatedly sample at oil well sampling mouth, utilize microwater device chemical examination antifreezing agent therein (ethylene glycol) content, when its content of ethylene glycol reaches 20%, now oil pumper is stopped to bottom dead centre, close Paraffin Removal gate to build the pressure, wherein: test pump efficiency fluid and be made up of the water of the antifreezing agent (ethylene glycol) that the potassium chloride that weight/mass percentage composition is 5.5%, weight/mass percentage composition are 23.5% and surplus；
(2), the time of building the pressure be 10 minutes, it is medium for suppressing 3-5MPa when pressure, and below 3MPa is for poor, and more than 5MPa is as well.
Scene shows: if injection rate is too little, it is difficult to test out pump efficiency quality；If injection rate is too many, the poor pump of pump efficiency is likely tested as pump efficiency better, injects and tests pump efficiency fluid 3m3～5m3It is preferred.
The present invention had the advantages that used in the present invention test pump efficiency fluid have nontoxic, do not injure the characteristics such as stratum, density is little, low temperature resistant.Potassium chloride primarily serves the effect on protection stratum, and antifreezing agent (ethylene glycol) mainly prevents oil pipe bursting by freezing.Determine the pump efficiency of Three Estate according to the time of building the pressure, pressure size, i.e. Three Estate poor, medium, good, according to on-site actual situations and test the grade of pump efficiency and determine whether to carry out CO_2 stimulation site operation.
Detailed description of the invention:
Below in conjunction with specific embodiment, the present invention is further described:
(1), Bei28 well after anti-bar card liquid application work terminates, from oil sets annular space inject test pump efficiency fluid 3m3Run through oil pumper 8h, when there is weak yellow liquid in sample tap, repeatedly sample at oil well sampling mouth, utilize microwater device to chemically examine anti-freeze content therein, when its content reaches 20%, now oil pumper is stopped to bottom dead centre, close Paraffin Removal gate to build the pressure, wherein: test pump efficiency fluid and be made up of the water of the antifreezing agent (ethylene glycol) that the potassium chloride that weight/mass percentage composition is 5.5%, weight/mass percentage composition are 23.5% and 71%；
(2), the time of building the pressure be 10 minutes, pressure can suppress 3.5MPa, for medium.CO_2 stimulation site operation can be carried out.
Claims (1)
1. testing a pump efficiency method in order to what improve CO_2 stimulation success rate, the method comprises the following steps:
(1), after anti-bar card liquid application work terminates, inject from oil sets annular space and test pump efficiency fluid 3m3～5m3Run through oil pumper 8h, when there is weak yellow liquid in sample tap, repeatedly sample at oil well sampling mouth, utilize microwater device to chemically examine anti-freeze content therein, when its content reaches 20%, now oil pumper is stopped to bottom dead centre, close Paraffin Removal gate to build the pressure, wherein: test pump efficiency fluid and be the antifreeze glycol of 23.5% by the potassium chloride that weight/mass percentage composition is 5.5%, weight/mass percentage composition and the water of surplus forms；
(2), the time of building the pressure be 10 minutes, it is medium for suppressing 3-5MPa when pressure, and below 3MPa is for poor, and more than 5MPa is as well.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410000357.XA CN103899297B (en) | 2014-01-02 | 2014-01-02 | A kind of improve CO_2 stimulation success rate test pump efficiency method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410000357.XA CN103899297B (en) | 2014-01-02 | 2014-01-02 | A kind of improve CO_2 stimulation success rate test pump efficiency method |
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| CN103899297A CN103899297A (en) | 2014-07-02 |
| CN103899297B true CN103899297B (en) | 2016-06-29 |
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Citations (5)
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|---|---|---|---|---|
| US4605066A (en) * | 1984-03-26 | 1986-08-12 | Mobil Oil Corporation | Oil recovery method employing carbon dioxide flooding with improved sweep efficiency |
| CN1524923A (en) * | 2003-02-25 | 2004-09-01 | 大庆油田有限责任公司 | Oil well cleaning antiscale |
| CN102040992A (en) * | 2010-11-16 | 2011-05-04 | 赵金树 | Rod blockage prevention liquid for carbon dioxide huff-puff enhanced oil recovery and injection method thereof |
| CN102587873A (en) * | 2011-12-01 | 2012-07-18 | 中国石油天然气股份有限公司 | Carbon oxide huff-n-puff, water control and oil increment method for horizontal well |
| CN103422838A (en) * | 2013-08-28 | 2013-12-04 | 赵金树 | Carbon dioxide huff and puff enhanced oil production method |
-
2014
- 2014-01-02 CN CN201410000357.XA patent/CN103899297B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605066A (en) * | 1984-03-26 | 1986-08-12 | Mobil Oil Corporation | Oil recovery method employing carbon dioxide flooding with improved sweep efficiency |
| CN1524923A (en) * | 2003-02-25 | 2004-09-01 | 大庆油田有限责任公司 | Oil well cleaning antiscale |
| CN102040992A (en) * | 2010-11-16 | 2011-05-04 | 赵金树 | Rod blockage prevention liquid for carbon dioxide huff-puff enhanced oil recovery and injection method thereof |
| CN102587873A (en) * | 2011-12-01 | 2012-07-18 | 中国石油天然气股份有限公司 | Carbon oxide huff-n-puff, water control and oil increment method for horizontal well |
| CN103422838A (en) * | 2013-08-28 | 2013-12-04 | 赵金树 | Carbon dioxide huff and puff enhanced oil production method |
Non-Patent Citations (2)
| Title |
|---|
| 张晓东等.抽油机井泵效影响因素之主成分分析法.《西南石油大学学报（自然科学版）》.2011,第33卷(第5期), * |
| 郑春峰等.憋压诊断技术在渤海Q油田潜油电泵井管理中的应用.《石油钻采工艺》.2012,第34卷(第增刊期), * |
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Effective date of registration: 20151207 Address after: 303, B-10, room 4-8, service outsourcing industry park, 163000 Xinfeng Road, hi tech Zone, Heilongjiang, Daqing Applicant after: DAQING JINJUN PETROLEUM TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 163000 No. 4-12, Gaoping District, Datong song Road, Datong District, Heilongjiang, Daqing Applicant before: Zhao Jinshu |
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